Conveyer for drying apparatus.



PATENTED MAR. a, 1908. E. UFENAST. GONVEYER FOR DRYING APPARATUS.

APPLICATION FILED JULY 30, 1906.

2 BHEETSSHEET 2.

a A A A lm/erzlar I WZ'JwJ eJ EMIL UFENAST, OF ZURICH, SWITZERLAND.

CONVEYER FOR DRYING APPARATUS.

Specification of Letters Patent.

Eatenteol Maren 3, 1908.

Application filed July 30. 1906. Serial No. 328.395.

To all whom it may concern:

Be it known that I, EMIL UFENAST, a citizen of the Swiss Republic, residing at Strenlistrasse 9, Zurich, Switzerland, have invented certain new and useful Improvements in Conveyers for Drying Apparatus, of which the following is a specification.

This invention relates to a conveyer for drying plants serving for drying products of all kinds, and permits in the simplest manner and with the least expenditure of energy,

, the goods to be put in and removed from the drying oven, without its being necessary to draw out the conveyer.

With this conveyer horizontal shelves are arranged sidewise on a conveyer frame carrying receivingapparatus for the goods to be dried. The frame rests on tip-levers by means of which it can be raised and lowered over and under side supporting surfaces whereby the receiving apparatus resting thereon for the material to be dried, on the displacement of the conveyer frame under the supporting surfaces, are left lying on the latter. Furthermore a driving gear is provided by means of which the conveyer frame may be carried along in a horizontal direction. The tip-levers carrying-the frame are connected together, so that the first, that is, the lever next to the gearing, is connected by means of a wire rope to a rope drum arranged on the main shaft of the gearing.

In the annexed drawings an apparatus according to my invention is shown.

Figure 1 is an elevation of the conveyer; Figs. 2 and 3 are sectional views; Fig. 4 is a plan artly in section; Fig. 5 is a view of the coup ing attached to the rope drum; Fig. 6 is a plan of Fig. 5, and Fig. 7 is a sectional detail view, to a larger scale, of a coupling device.

The conveyer frame 1 is of iron and rests on rollers 2, which are rotatably fitted on the free ends of tip levers 2 The latter are fixed on spindles 3 which at one end extend to the outside of the drying oven. On the ends of the shafts 3 projecting from the oven single arm levers 4 are fixed which are connected together by adjustable connecting rods 5. Furthermore the first lever 4, that is, the one nearest to the driving gear 7 is connected by means of a wire rope 6 with the rope drum 10 fitting loosely on the shaft 8 and attached to the coupling-piece 9. The coupling-piece 9 is formed as a curved disk on which rests one .arm of the angle lever 12 -the right in a horizontal direction.

carried by a support 11. This lever arm is loaded with a weight 13. The second arm of the angle lever 12 is connected to the forked end of a horizontal arm 14 fiXed to the shaft 15 arranged vertically and rotatably fitted on the support 11. Two single armed levers 16 and 16 are also keyed on the shaft 15 and actuate the sliding ring 17. This sliding ring 17 slides in a groove provided in the boss of a disk 17 fitted on the second coupling-piece 9 The second coupling-piece 9 is fastened on the shaft 8 and has holes in the back surface in which bolts. 18 engage, which are fastened to the disk 17 By means of this engagement of the bolts 18 the disk 17 of the coupling-piece 9 is put in motion. On the coupling piece 9 holes 19 are bored corresponding with those in the part- 9 The bolts 18 can be engaged in the holes 19 by displacing the disk 17, whereby the coupling-piece 9 to.- gether with the rope-drum 10 can also be put in rotation. The shaft 8 runs under the conveyer frame 1 and carries in the center of the conveyer apparatus a toothed wheel 20 engaging in the rack 21 of the runner 22. This runner 22 is provided with an extension 23 which engages between two transverse pieces 24 and 25 of the conveyer frame, so that the conveyer frame can be moved to the left or In order to alter the directions of rotation of the .driving gear 7 a rod 26 fitted with two belt forks is provided, and is connected in such manner with the angle lever 27 that one lever arm is attached to the rod 26 and the other lever arm is actuated by the projections 28 and 28 arranged on the frame 1.

The conveyer apparatus described acts as follows :If for example goods are to be placed in the drying oven, then according to the present form of construction, they are carried in trays by means of wagons running on a railway and the trays are loaded on to the conveyer frame. As soon as the driving gear 7 is put in action so that the shaft 8 rotates, the lever arm of the angle lever 12 is at the same moment raised by hand, the coupling is inserted by the action of the levers 14, 16 and 16 whereby the wire rope 6 on the rope drum 10 is unwound until the lever arm of the angle lever 12, loaded with the weight, falls into the curved disk of the cou lingiece 9, and the rope drum is prevente from further backward movement and the coup ling is simultaneously withdrawn. The tip levers 2 on which the conveyer frame rests are so hung that with the conveyer frame raised they do not reach the dead point and consequently have a tendency by reason of the weight of the said frame resting on them, to tip over, which tipping can only take place to the extent of allowing the said lever arm of the angle lever 1.2 to fall into the notch of the curved disk. The conveyer frame 1 has reached its lowest position by the tipping over of the levers 4, so that it comes under the supporting surfaces 29. At the same time the projection 23 of the runner 22 has reached the transverse piece 24 and draws the frame 1 to the left (Figs. 1 and 4). The drawing back of the conveyer frame continues until the projection 28 acts on the switching apparatus 26 and the direction of rotation of the gearing is then altered. By the alteration of the direction of'rotation and by the raising of the angle lever 12 the runner 22 moves to the right, when, owing to the rotating movement of the inserted coupling, the wire rope 6 is wound up on the rope drum. By the winding of the wire rope the tip levers 2 are drawn up and the conveyer frame is raised over the supporting surfaces 29, whereon the horizontal lever arm of the angle lever 12 falls in again and the coupling is disengaged. The projection 23 strikes on the transverse piece 25 whereby the conveyer frame is drawn to the right until the direction of rotation of the gearing 7 is altered by the projection 28. The unwinding or winding of the wire rope 6 is always completed with a rotation of the rope drum 10. There is consequently produced an alternate equal forward and backward movement of the conveyer frame over and under the supporting surfaces 29. of material for drying on the conveyer frame these are moved forward at definite intervals of time. With the lowering of the frame under the supporting surfaces 29 the trays come onto the latter and the further movements of the frame again actuate these trays when the frame is again raised to its higher position.

What I claim as my invention and desire to secure by Letters Patent is 1. In conveyer apparatus for a drying plant an iron frame consisting of two parallel longitudinal carriers, rollers supporting the carriers, single armed levers, on the free ends of which the rollers are fitted, shafts carrying the levers and wall supports over and under If therefore there are trayswhich the frame is moved by the levers for the purpose described.

2. In conveyer apparatus for a drying lant an iron frame, consisting of two paralle longitudinal carriers, rollers supporting the,

frame, single armed levers on the free ends of which the rollers are fitted, shafts carrying the levers, wall supports over or under which the frame is moved by the shafts and levers, operating levers and adjustable connections from the said operating levers to the shafts enabling them to be turned simultaneously.

3. In conveyer apparatus for a drying plant, an iron carrier frame, rollers supporting the frame, single armed levers carrying the rollers, shafts on which the levers are mounted, operating levers connected together, winding mechanism connected to one of the levers, coupling mechanism for the winding drum adapted to be engaged by hand, and means for automatically uncoupling.

4. In conveyer apparatus for a drying plant, an iron carrier frame, supporting rollers for the frame, single armed levers carrying the rollers, shafts on which the levers are mounted, mutually connected shaft operating levers, Winding mechanism actuating the said levers, a hand applied coupling for the winding mechanism, means for automatically disengaging the coupling, a toothed wheel on the shaft of the winding mechanism, and a rack engaged by the wheel and arranged to move the carrier frame intermittently.

5. In conveyer apparatus for a drying plant, an iron carrier frame, rollers supporting the frame, single armed levers carrying the rollers, shafts on which the levers are mounted, interconnected operating levers for the shafts, winding mechanism connected to one of the said levers, means for engaging the winding mechanism by hand and for disengaging it automatically, a toothed wheel on the shaft of the winding mechanism, a rack engaged by the toothed wheel and adapted to move the carrier frame intermittently and a lever operated by the moving frame effecting the automatic disengagement of the driving mechanism.

In witness whereof I have hereunto set my hand in the presence of two witnesses.

EMIL UFENAST.

Witnesses FRITZ LAWRENCE, A. LIEBERKNECHT. 

